Multiple watermarks in content

• US 7,266,217 B2
• Filed: 05/30/2006
• Issued: 09/04/2007
• Est. Priority Date: 05/08/1995
• Status: Expired due to Fees

• Current Assignee: Digimarc Corporation
• Original Assignee: Digimarc Corporation
• Inventors: Rhoads, Geoffrey B., Gustafson, Ammon E.
• Primary Examiner(s): COUSO, YON JUNG
• Application Number:
  US11/420,977
• Publication Number:
  US 20060210109A1
• Time in Patent Office: 462 Days
• Field of Search: 382/100, 382/232, 382/254, 235/494, 312/100, 345/634, 358/3.28, 380/202, 380/203, 380/205, 380/210, 380/34, 380/54, 705/50, 705/60, 713/176, 715/517
• US Class Current: 382/100
• CPC Class Codes: B29C 45/1418 the inserts being deformed or preformed, e.g. by the injection pressure
• CPC Class Codes: B42D 25/29 Securities; Bank notes
• CPC Class Codes: G06Q 30/02 Marketing; Price estimation or determination; Fundraising
• CPC Class Codes: G06T 1/0071 using multiple or alternating watermarks
• CPC Class Codes: G06T 2201/0052 Embedding of the watermark in the frequency domain
• CPC Class Codes: G06T 2207/30144 Printing quality
• CPC Class Codes: G06T 7/0002 Inspection of images, e.g. flaw detection
• CPC Class Codes: G07C 9/253 visually
• CPC Class Codes: G07D 7/0034 using watermarks
• CPC Class Codes: G07D 7/004 using digital security elements, e.g. information coded on a magnetic thread or strip
• CPC Class Codes: G07F 7/08 by coded identity card or credit card or other personal identification means without personal verification means G07F7/02
• CPC Class Codes: G07F 7/086 by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer for security documents G07D7/00; for the reading of record-carriers in general G06K7/00; for the design of coded credit-cards G06K19/10
• CPC Class Codes: G07F 7/12 Card verification
• CPC Class Codes: G10L 19/018 Audio watermarking, i.e. embedding inaudible data in the audio signal
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: H04N 1/00002 Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for error detection, error correction or monitoring in digital computers or digital computer components G06F11/00
• CPC Class Codes: H04N 1/00005 relating to image data
• CPC Class Codes: H04N 1/00037 Detecting, i.e. determining the occurrence of a predetermined state H04N1/00031 takes precedence
• CPC Class Codes: H04N 1/00092 relating to the original or to the reproducing medium, e.g. imperfections or dirt detecting properties of a sheet H04N1/00681
• CPC Class Codes: H04N 1/00846 based on detection of a dedicated indication, e.g. marks or the like
• CPC Class Codes: H04N 1/00875 : Inhibiting reproduction, e.g. by disabling reading or reproduction apparatus
• CPC Class Codes: H04N 1/00973 : from a remote device, e.g. receiving via the internet instructions input to a computer terminal
• CPC Class Codes: H04N 1/32144 : embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
• CPC Class Codes: H04N 1/32149 : Methods relating to embedding, encoding, decoding, detection or retrieval operations
• CPC Class Codes: H04N 1/32219 : involving changing the position of selected pixels, e.g. word shifting, or involving modulating the size of image components, e.g. of characters H04N1/32224 takes precedence
• CPC Class Codes: H04N 1/32229 : with selective or adaptive application of the additional information, e.g. in selected regions of the image H04N1/32213 takes precedence
• CPC Class Codes: H04N 1/32261 : in binary data H04N1/32256 takes precedence
• CPC Class Codes: H04N 1/32277 : Compression
• CPC Class Codes: H04N 1/32304 : Embedding different sets of additional information
• CPC Class Codes: H04N 1/32309 : in colour image data
• CPC Class Codes: H04N 1/3232 : Robust embedding or watermarking
• CPC Class Codes: H04N 1/32331 : Fragile embedding or watermarking
• CPC Class Codes: H04N 2201/3205 : of identification information, e.g. name or ID code H04N2201/3209 takes precedence
• CPC Class Codes: H04N 2201/3207 : of an address
• CPC Class Codes: H04N 2201/3226 : of identification information or the like, e.g. ID code, index, title, part of an image, reduced-size image
• CPC Class Codes: H04N 2201/3233 : of authentication information, e.g. digital signature, watermark
• CPC Class Codes: H04N 2201/3239 : using a plurality of different authentication information
• CPC Class Codes: H04N 2201/327 : which are undetectable to the naked eye, e.g. embedded codes
• CPC Class Codes: H04N 2201/3271 : Printing or stamping
• CPC Class Codes: H04N 2201/3283 : Compression

Abstract

Image, video, and/or audio data is encoded with at least first and second watermarks. In one implementation a method includes: receiving content; embedding a first watermark signal in the content; compressing the content; embedding a second watermark signal in the content. The first watermark signal and the second watermark signal are designed to respond differently to at least a first type of signal processing. Other implementations are also provided.

Claims

1. A method comprising:

receiving content comprising at least video and audio;

analyzing the content to determine whether a first watermark signal and a second watermark signal are encoded in content;

when the first watermark signal is present in the content, but not the second watermark signal, making a first decision concerning the content; and

when both the first watermark signal and the second watermark signal are present in the content, reaching a second, different, decision concerning the content.

2. The method of claim 1, wherein the first and second watermark signals are encoded in the content with digital watermarking.

3. The method of claim 2, in which the first watermark signal is designed to withstand a predetermined process, and the second watermark signal is not.

4. A machine-readable medium comprising instructions stored therein, wherein the instructions comprise instructions to perform the method of claim 1.

5. A method comprising:

receiving content;

embedding a first watermark signal in the content;

compressing the content;

embedding a second watermark signal in the content,

wherein the first watermark signal and the second watermark signal are designed to respond differently to at least a first type of signal processing.

6. The method of claim 5, wherein the first watermark signal comprises first information and the second watermark signal comprises second information.

7. The method of claim 5, wherein the first watermark information is designed to withstand a first type of signal processing, and the second watermark information is not.

8. The method of claim 5 wherein the first type of signal processing comprises at least decompression.

9. A printed document including a first substrate with ink or dye provided thereon, the ink or dye forming at least:

a first watermark; and

a second watermark,

wherein the first watermark corresponds with a first characteristic and the second watermark corresponds with a second characteristic, and

wherein the first and second characteristics are affected in a different manner when the document is subjected to a first type of processing.

10. The printed document of claim 9 wherein the first corruption process comprises a color transformation.

11. The document of claim 10 wherein the first characteristic comprises a first color.

12. The document of claim 11 wherein the second characteristic comprises a second color.